张家口水资源优化配置与可持续利用研究

Study on water resources optimization allocation and its sustainability development in Zhangjiakou

水资源短缺是制约张家口地区经济社会发展和生态环境保护的重要因素。本研究在张家口水资源系统分析的基础上,构建了基于水质与水量的多水源协同配置模型,以综合经济效益最大为目标,以水源可供水量、用户最小需水作为约束条件,在优先生态保护的前提下对规划水平年不同频率下水资源进行配置。结果表明:2025和2030年多年平均张家口缺水率分别为11.6%和12.5%,在枯水年和特枯年缺水将进一步加大,缺水主要发生在永定河流域。水资源供给以地下水源为主,再生水的供给呈逐渐增加趋势。农业是主要用水大户,且未来农业用水量呈下降趋势。针对未来张家口水资源利用格局,提出水资源可持续利用对策,以期为经济社会与生态环境保护协调发展提供支撑。

Water scarcity is an important constrict factor for economy development and eco-environment protection in Zhangjiakou.In this paper,based on analysis of water resources system in Zhangjiakou,a multi-source water coordination allocation model has been established,which combining water quality and water quantity.The maximum economy benefit as objective function,the maximum available water and minimum water requirement as constricts,the water resources optimization allocation model has been carried out.After meet the water requirement of eco-environment,the water resources has been distributed by using the model under different frequency in different planning years.The results indicate the ration of water shortage respectively are 11.6%,12.5% in 2025 and 2030,and the water scarcity would be increased during dry year or very dry year.The water shortage mainly occurred in Haihe river basin.The underground water is main source for water supply,and utilization of reclaimed water is gradually increasing.The main water user is agriculture sector in Zhangjiakou,and the water use by agriculture is gradually decreasing.The sustainability development measure have been proposed for water exploitation of Zhangjiakou in the future,which provides a support for harmonious development between eco-society and environment protection.